Lock for filing-cases.



R. G. BULLOCK.

LOCK FOR FILING CASES.

APPLICATION FILED JUNE 6. 1913.

Patenfped Sept. 1, 1914.

2 SHEETS--SHEET 2.

Witnamao @M M W UNITED STATES PATENT OFFICE.

RAYMOND'G. BULLOCK, OFJAMESTOWN, NEW YORK; ASSIG-NOR TO ART METALOON-r STRUCTION COMPANY, OF JAMESTOWN, NEW YORK, A CORPORATION OF NEW YORK.

noon r012. FILING-GASES.

Specification of Letters Patent.

Patented Sept. 1, 1914.

Application filed June 6, 1913. Serial No. 772.191.

. To all whom it may concern:

Be it-known that I, RAYMOND :G. BUL-1 LOCK, a citizen of the United States, residing at Jamestown, in the county of Chautauqua and State of New York, have invented certain new and useful Improvements in Looks for Filing-Cases, of which the following is a specification. 4

The object of this invention 1s to provide an improved locking device for the purpose of'a filing case. I

Another object of the invention is to provide a locking device that will cooperate with drawers that extend substantially the full length of a filing case.

Another object of the invention is to provide a locking device that will engage with the drawers from underneath and that will ordinarily occupy the dead space in a case above the drawer below.

These and other objects of my-invention will be fully illustrated in the drawings described in the specifications and pointed out in the claims.

In the accompanying drawings, Figure l'is a vertical longitudinal section of a filing cabinet to contain my improved locking device, the section being taken on the line l "l of Fig. 2. Fig. 2 is a rear elevation of a filing case partly broken away as is. indicated by the section 2"-2 inFig. 1. Fig. 3 is an enlargeddetail section view of one of the look ing dogs shown'together with a portion of the drawer with which it cooperates. Fig. 4 is a vertical section on the line 4* X of Fig.

3. Fig. 5 is a vertical section of the case, the section being taken on the line 5" 5 of Fig.

3. Fig. 6 is a section on the line 6"6 of Fig. 3, showing a bottom plan view of the in Patent 1,036,345, Sampson. In either case the locking device will be operated through a bar 1 shown in Figs. 1 and 2, which bar will extend continuously through the complete casing, but in a unit section will be .made up with units or joints one for each unit section. The operating mechanism for this bar will preferably be substantially the same as that illustrated in the application of Everett Stuck, 683,993, and this constitutes no part of my present invention. 7 6.0.

On the bar 1 is provided the studs .2 at suitable intervals for the purposethat will presently be described. The bar 1 runs verti' cally through the case." Extending trans? versely through the case adjacent to thebars l are the rock shafts 3-3 which rock shafts,

on the ends thereof carry the arms or cranks 4 which arms are engaged by the studs '2 so that the shift 3 can'be rocked bythe reciproi;

cation of the bar 1. On the shaft 3 at suit- 7o able intervals are keyed the locking dogs 5.' The shaft 3 is preferably around shaft with a flat side. The dogs are provided to corre- S 0nd to the cross section of the shaft so t at the dogs are substantially rigid foran- 7,5

5 extend u through the slot 7 provided in the plate erefor. In this plate are struck up the ears or lugs 8 and 8 which are utilized to hold the spring 9. This spring 9 contains a bail 10 adapted to engage with the dog 5. The dog 5 being suitably recessed so as to be positively engaged by thebail of the spring.

The torsion' of the spring laterally holds the dog 5 in the position shown in Figs. 3, 7,

8, and 9, that is in position to engage with 90.

the clip on the bottom of the drawer.

As is illustrated in Fig. 3 the bottomof the drawer 11 is immediately above and paral'lel to the bottom of the case 6. The bottom drawer carries 'at its rearv end the clip 95.

or angle iron 12. The upper edge of the dog 5 is beveled upwardly as'is indicated at 13. When the drawer is pushed in the clip 12 engages with the beveled edge 13 ofthe dog and pushes it down until the clip has passed beyond the upper corner of the (log, after.

which the dog is released and the spring 9 operates tothrow the do up into lock ng position in front of the clip. This prevents the drawer from being pulled out. By lifting the bar 1 and causing the shafts 3 of the case to rock the dogs will be drawn down out of engagement with the clips on the drawers permitting the drawers to be drawn out.

I have shown the clip in the form of an 110. i

l i l l i angle that is specially fastened to the bottom of the drawer. In Fig. 7 I have shown the drawer modified. In this instance the bottom plate 15 of the drawer is spun around the rod 16-by which it is reinforced, and in this case the dog passes through a slot cut into the bottom 15 of the drawer and engages with the end of the drawer, as is illustrated in Fig. 7. As is illustrated in Fig. 8 the rear of the drawer may be provided with a bar 17 which projects below the drawer, and with which the dog can pass into and out of engagement.

'In Fig. 9 the angle 18 is fastened to the back of the drawer and is provided with a suitable recess 19 with which the dog 5 can engage. In this instance the bottom of the drawer 15 can be placed somewhat closer to the bottom of the casing. The space behind the drawer being of course wasted. This, however is not objectionable in certain classes of filing where extended blanks are to be taken care of. Diiferenttypes of these drawers may be used in the same case according to the kind of filing that is to be taken care of therein.

In the form of drawer shown in Fig. 7 I may provide a guard 20 with which the rear end of the drawer engages. This ard prevents the drawer from lifting. T is device is desirable in cases where any special provision is made in the case to keep the drawer from lifting. The bars 21 are provided in the casing or sections to furnish a suitable bearing for the shafts 3. At the end of the case this bar 21 may be made wide so as to serve as the endof the case.

- The hub of the dog 5 is provided with an enlarged circular portion 22 which is adapted to engage with the corresponding slot in the bottom of the case by means of which the lateral movement of the dog on the shaft is prevented. The end of the dog is curved so as to make it concentric of the center of the shaft 3. The dogs are assembled in the case by placing them with their hubs in engagement with their slots in the bottom plate and then passing the shaft 3 through the holes in the hubs of the dogs. The shafts 3 are then secured in place.

The operation of my lockingdevice is as follows: The .dogs normally stand in the po- 'sition shown in either of the figures. The drawer is pushed back until the clip thereon engages with the dog and presses down against the torsion of the spring 9. After the clip on the drawer has passed the dog the spring forces the dog up so that the rear end of the dog engages with the clip holding the drawer securely locked in the case. The dogs are released by raising the bar 1 through the operating mechanism above referred to, after which the drawers can be withdrawn from the case as long as the bar 1 remains up. It will benoticed that each shaft has a separate and loose engagement with the operating bar 1. This permits any shaft 3' to move with its do s to unlocking position while the bar 1 is own in locking position. This in turn permits any drawer to be moved into locking position without disturbing the dogs that are in the sections above or below it.

I claim.

1. In a filing case, a drawer mounted to slide therein, a lockin clip mounted below said drawer, a rock s aft mounted in said case below the drawer, said rock shaft having a dog thereon adapted to engage said clip, and a spring exerting a constant upward pressure on the dog and adapted to hold said dog yieldingly in engagement with the clip.

2. In a filing case, a drawer mounted to slide therein, a flange on the bottom of said drawer, a rockshaft mounted in said filing casebelow the drawer, a locking-dog mounted on said rock shaft, and a torsion spring mounted on said filing case engaging with said dog and exerting a constant upward pressure thereon, said spring yieldingly holding the dog in engagement with 3. In a filing case, a drawer mounted to slide therein, a flange extending downwardly. from said drawer, a pivotally mounted locking dog engaging with said flange from below said drawer, a torsion spring removabl mounted on said case haying a loose sli ing engagement w1th sa1d dog, and a rock shaft on which the locking .dog is mounted, said shaft being operable to turn the dog against the pressure of said spring to release said dog from engagement with said flange.

In testimony whereof I aflix my signature in presence of two witnesses.

RAYMOND G. BULLOCK.

Witnesses HENRY C. FOSBERG, REUBEN FENTON FISHER. 

